<template>
  <div class="login-container">
    <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        class="login-form"
        autocomplete="on"
        label-position="left"
    >
      <div class="title-container">
        <h3 class="title">后台管理系统</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user"/>
        </span>
        <el-input
            ref="username"
            v-model="loginForm.username"
            placeholder="用户名"
            name="username"
            type="text"
            tabindex="1"
            autocomplete="on"
        />
      </el-form-item>

      <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password"/>
          </span>
          <el-input
              :key="passwordType"
              ref="password"
              v-model="loginForm.password"
              :type="passwordType"
              placeholder="密码"
              name="password"
              tabindex="2"
              autocomplete="on"
              @keyup.native="checkCapslock"
              @blur="capsTooltip = false"
              @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"/>
          </span>
        </el-form-item>
      </el-tooltip>

      <el-row>
        <el-col :span="12">
          <el-form-item prop="code">

            <el-input
                ref="username"
                v-model="loginForm.code"
                placeholder="请输入短信验证码"
                name="code"
                type="text"
                tabindex="1"
                autocomplete="on"
            />

          </el-form-item>
        </el-col>
        <el-col :span="6">
          <el-button
              :loading="loading"
              type="primary"
              style="width:100%;margin-left:8px;margin-top: 8px"
              @click="handleGetSmsCode"
          >{{ timeRemaining < 60 ? timeRemaining : '获取验证码' }}
          </el-button>
        </el-col>

      </el-row>


      <el-row>
        <el-button
            :loading="loading"
            type="primary"
            style="width:100%;margin-top:10px;"
            @click.native.prevent="handleLogin"
        >登录
        </el-button>
      </el-row>

    </el-form>
  </div>
</template>

<script>
// import { validUsername } from '@/utils/validate'
import axios from 'axios'
import {getSmsCode} from '@/api/user'
import {getData} from "@/api/system";

export default {
  name: 'Login',
  data() {
    // const validateUsername = (rule, value, callback) => {
    // if (!validUsername(value)) {
    //   callback(new Error('Please enter the correct user name'))
    // } else {
    //   callback()
    // }
    // }
    return {
      loginForm: {
        username: '',
        password: '',
        mac: '',
        code:''
      },
      loginRules: {
        username: [{required: true, trigger: 'blur'}],
        password: [{required: true, trigger: 'blur'}],
        code: [{required: true, trigger: 'blur'}]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {},
      getSmsCodeLoading: false,
      timeRemaining: 60,
      timer: null

    }
  },
  watch: {
    $route: {
      handler: function (route) {
        const query = route.query
        if (query) {
          this.redirect = query.redirect
          this.otherQuery = this.getOtherQuery(query)
        }
      },
      immediate: true
    },
    // 监听用户名变化，清除验证码相关状态
    'loginForm.username': {
      handler(newVal, oldVal) {
        if (newVal !== oldVal && newVal) {
          // 用户名变化时，清除验证码输入和验证状态
          this.loginForm.code = '';
          if (this.$refs.loginForm) {
            this.$refs.loginForm.clearValidate(['code']);
          }
        }
      }
    }
  },

  mounted() {
    if (this.loginForm.username === '') {
      this.$refs.username.focus()
    } else if (this.loginForm.password === '') {
      this.$refs.password.focus()
    }
    else if (this.loginForm.code === '') {
      this.$refs.code.focus()
    }
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  beforeDestroy() {
    clearInterval(this.timer);
  },
  methods: {
    handleGetSmsCode() {
      if (this.getSmsCodeLoading) return;

      // 验证用户名是否为空
      if (!this.loginForm.username) {
        this.$message.error('请输入用户名');
        return;
      }

      let _this = this;
      let para = {
        username: _this.loginForm.username
      };

      _this.getSmsCodeLoading = true;

      getSmsCode(para).then(res => {
        if (res.code == 20000) {
          _this.$message.success('验证码已发送');
          _this.timer = setInterval(() => {
            _this.timeRemaining--;
            if (_this.timeRemaining <= 0) {
              clearInterval(this.timer);
              console.log("倒计时结束");
              _this.timeRemaining = 60;
              _this.getSmsCodeLoading = false;
            }
          }, 1000);
        } else {
          // 获取验证码失败，重置状态
          _this.getSmsCodeLoading = false;
          _this.$message.error(res.message || '获取验证码失败');
        }
      }).catch(error => {
        // 请求异常，重置状态
        _this.getSmsCodeLoading = false;
        console.error('获取验证码错误:', error);
        _this.$message.error('获取验证码失败，请稍后重试');
      });
    },
    checkCapslock({shiftKey, key} = {}) {
      if (key && key.length === 1) {
        if (
            (shiftKey && key >= 'a' && key <= 'z') ||
            (!shiftKey && key >= 'A' && key <= 'Z')
        ) {
          this.capsTooltip = true
        } else {
          this.capsTooltip = false
        }
      }
      if (key === 'CapsLock' && this.capsTooltip === true) {
        this.capsTooltip = false
      }
    },

    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      // 清除之前的验证状态
      this.$refs.loginForm.clearValidate();
      
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true
          this.$store
              .dispatch('user/login', this.loginForm)
              .then(() => {
                localStorage.first_time = true
                this.$router.push({
                  path: '/dashboard' || '/',
                  query: this.otherQuery
                })
                // this.$router.push({ path: this.redirect || '/', query: this.otherQuery })
                this.loading = false
              })
              .catch((error) => {
                this.loading = false
                // 登录失败后，清除验证码字段的验证状态，允许重新输入
                this.$refs.loginForm.clearValidate(['code']);
                // 如果是验证码错误，清空验证码输入框
                if (error && error.message && error.message.includes('验证码')) {
                  this.loginForm.code = '';
                }
              })
        } else {
          console.log('error submit!!')
          // 验证失败时，清除验证码字段的验证状态
          this.$refs.loginForm.clearValidate(['code']);
          return false
        }
      })
    },
    getOtherQuery(query) {
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== 'redirect') {
          acc[cur] = query[cur]
        }
        return acc
      }, {})
    },
    // 重置表单验证状态
    resetFormValidation() {
      if (this.$refs.loginForm) {
        this.$refs.loginForm.clearValidate();
      }
    }
    // afterQRScan() {
    //   if (e.key === 'x-admin-oauth-code') {
    //     const code = getQueryObject(e.newValue)
    //     const codeMap = {
    //       wechat: 'code',
    //       tencent: 'code'
    //     }
    //     const type = codeMap[this.auth_type]
    //     const codeName = code[type]
    //     if (codeName) {
    //       this.$store.dispatch('LoginByThirdparty', codeName).then(() => {
    //         this.$router.push({ path: this.redirect || '/' })
    //       })
    //     } else {
    //       alert('第三方登录失败')
    //     }
    //   }
    // }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
}
</style>
